Officially the first ever soft-landing on the far side of the moon, Chinese lunar module Chang’e 4 has landed within the 186 kilometres (115 miles) wide Von Kármán crater.
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Day 2 of #SaturnV construction...my wife continues to struggle with getting the sides attached after bag 3, I went to bag 12 to see what I could build. I got the top third of the #rocket done, plus the displays for the #lunarmodule and the #commandmodule after splashdown. #Lego gave me four #astronauts . Their example LM showed 3 astronauts with the flag. Being a stickler for accuracy, the two extras were tossed aside. Hopefully my two LEGO builders can figure out the problem. #Apollo#Apollo11#Christmas#gift#space

Have you ever wondered how those scribed lines worked on the inside is the lunar module windows?
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They’re actually part of the LPD, or Landing Point Designator, system. You can see that there are actually two identical scales, one scribed onto the inner window pane, the other onto the outer window pane. When the commander was standing inside the spacecraft, he could move his head slightly to change his line-of-site until the two scales lined up. He would them hold himself in this position.
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The LM computer would then display two angles, or coordinates, that represented a vertical and horizontal position on the scribed scales. As the commander looked through this precise point toward the moon, he would get a rough idea of their landing location as calculated by the computer.
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I’ve always loved the ingenuity and simplicity of this system, and it proved to work very well. Conrad, on his Apollo 12 flight exclaimed: “There it is! Son-of-a-gun! Right down the middle of the road!” Fantastic! 👌🏼 This photograph shows Schweickart during his Earth-orbital Apollo 9 spacewalk.
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🌎 Follow! @retro.rocketry
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📷 Credit: NASA
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#apolloprogram#lunarmodule#apollo9#spacesuit#astronaut#earth#space#nasa#nasa 🚀 #spacegeek#spacenerd#avgeek#avnerd#hud#headupdisplay#rockets#spacex#spaceflight#spacecraft#moonshot#spacehistory#engineering#ingenuity#aerospace#admiredastronaut